JP3099023U - Blower with forced heat dissipation function - Google Patents

Abstract

To provide a kind of blower capable of lowering a temperature of an airflow discharged from the blower.
An electric motor that receives and rotates electric power, provides rotational power, and has a rotating shaft that protrudes and extends on one side, and is provided on a side where the rotating shaft of the electric motor protrudes and extends, At the lower position, two through holes are provided, a casing communicating with the air supply flow pipe and the exhaust flow pipe, respectively, and an impeller set provided on the rotary shaft 21 and rotating together with the rotary shaft 21. A through hole 51 is provided in the middle, covers the casing 30, and the rotating shaft 21 is provided with a casing cover 50 penetrating through the through hole 51, and the rotating shaft 21 is provided outside the casing cover 50. And a heat radiating device 60 that generates an airflow that flows rapidly around the casing 30 and the casing cover 50.
[Selection diagram] FIG.

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a blower, and more particularly to a blower having a kind of forced heat radiation function.
[0002]
[Prior art]
As for a conventional blower currently known on the market, its main structure is, as shown in FIGS. 1 and 2, an electric motor 10, a casing 11, a bearing (not shown in the drawings), an impeller (see FIG. 1). (Not shown) and components such as an air supply passage 12 and an exhaust passage 13 which communicate with the casing. The principle of operation is to rotate the impeller in the casing 11 at high speed using the rotational power provided by the electric motor 10 to generate a high-pressure airflow in the exhaust passage and discharge it to the outside. However, such a structure may cause some problems in use. This is because the gap between the casing and the impeller is not very large because the blower normally discharges a relatively high pressure air pressure, thereby increasing the discharged wind pressure. Therefore, friction occurs in the air inside the casing due to the high-speed rotation of the impeller, and after cutting, the temperature rises and heat is generated. After operating the blower for a certain period of time (generally about 3 to 5 minutes) ), The temperature inside the casing usually rises to 100 to 120 ° C. Such a high temperature changes the discharged air into a high-temperature airflow, and also causes a situation in which the lubricating oil, which was originally milky inside the bearing, is heated and turned into a liquid state. This greatly reduces the lubricating effect of the lubricating oil on the bearing, and has the disadvantage that the bearing is easily worn away.
[0003]
Furthermore, since the temperature rise inside the casing expands the volume of the internal air and reduces the density, the discharged wind pressure is smaller than the designed wind pressure in the original normal temperature state, and the blow pressure discharged by the blower is insufficient. A situation arises. Further, under certain special use conditions such as agriculture, fisheries, and aquaculture, the high-heat airflow discharged from these blowers causes some damage to animals and plants. This is a problem faced by blowers at present, but all current solutions passively provide many protrusions on the casing to increase the surface area of the casing to facilitate heat dissipation. There is no better solution yet.
[0004]
[Problems to be solved by the invention]
The main object of the present invention is to provide a kind of blower that can lower the temperature of the airflow discharged from the blower.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a blower having a forced heat radiation function according to the present invention includes the following. The electric motor rotates by receiving electric power and provides rotational power. A rotating shaft that protrudes and extends is provided on one side of the electric motor. The casing is provided on the side where the rotating shaft of the electric motor protrudes and extends, and two through holes are provided at a lower position of the casing to communicate with the supply air flow pipe and the exhaust flow pipe, respectively. An impeller set is provided on the rotating shaft and rotates together with the rotating shaft. A casing cover, a through hole is provided in the middle, the casing cover covers over the casing, and the rotating shaft penetrates the through hole so that the impeller set is covered in the casing and the casing cover. Has become. A heat radiating device is provided outside the casing cover and is driven by the rotating shaft to generate an airflow that flows rapidly around the casing and the casing cover.
[0006]
[Embodiment of the invention]
In order to describe the structure, features and effects of the present invention in detail, the following two preferred embodiments will be described in detail with reference to the drawings.
FIG. 3 is a side view of the blower having the forced heat radiation function according to the first embodiment of the present invention in a state where the outer cover is not installed.
FIG. 4 is a side view of the blower having the forced heat radiation function according to the first embodiment of the present invention.
FIG. 5 is a side view of a blower having a forced heat radiation function according to a second embodiment of the present invention.
FIG. 6 is a front view of a blower having a forced heat radiation function according to a second embodiment of the present invention.
[0007]
As shown in FIGS. 3 and 4, the blower having the forced heat radiation function according to the first embodiment of the present invention includes the following.
The electric motor 20 receives electric power, rotates, and provides rotational power. A rotating shaft 21 that protrudes and extends is provided on one side of the electric motor.
The rear casing 30 is provided on the side where the rotating shaft of the electric motor protrudes and extends, and two through holes are provided in a lower position of the rear casing.
[0008]
An air supply flow pipe 40 and an exhaust flow pipe 41 are provided on both sides of the electric motor, and each communicate with two through holes of the rear casing.
An impeller set (not shown in the figure) is provided on the rotating shaft, is housed in the rear casing, and rotates together with the rotating shaft 21.
The casing cover 50 has a disk shape, and a through hole 51 is provided in the middle. The casing cover overlies the rear casing 30 and the rotating shaft 21 penetrates the through-hole so that the impeller set 50 is covered by the rear casing 30 and the casing cover.
[0009]
The heat radiating device 60 is provided outside the casing cover and is driven by the rotating shaft 21 to generate an airflow that flows rapidly around the rear casing and around the casing cover, thereby producing a heat radiation effect. In this embodiment, the heat radiating device includes a rotating disk 61, a radiating blade 62 and a radiating blade 63, the rotating disk is provided on the rotating shaft, and the radiating blade is fixed on the rotating disk, The rotating disk and the heat radiating blade rotate together when the rotating shaft rotates.
The outer cover has a disc-shaped bottom 631 and an annular upright wall 632 is provided along the periphery thereof. The size of the outer cover is substantially the same as that of the casing cover, and is provided on the casing cover. It covers the outside of the blade. A number of through holes 633 are provided in the bottom of the outer cover to allow ventilation.
[0010]
To summarize the above, when the present invention is used, the radiator blades start operating at the same time as the impeller set starts rotating, so that an airflow that flows rapidly around the rear casing and the casing cover is generated. This produces an effect of forced heat radiation on the surfaces of the rear casing and the casing cover, effectively lowers the surface temperatures of the rear casing and the casing cover, and achieves the effect of lowering the temperature of the discharged airflow.
[0011]
As shown in FIGS. 5 and 6, the main structure of the blower having the forced heat radiation function according to the second embodiment of the present invention is substantially the same as that of the above-described embodiment, but the following points are different. The size of the outer cover is larger than the rear casing and the casing cover, so that after the outer cover covers the outside of the casing cover, a gap S is formed between the annular upright wall 632 and the casing cover 50. As a result, the convection of the air current generated when the heat radiating blade 62 rotates can be further smoothed, and the temperature reduction effect can be further improved.
[0012]
The heat dissipating device of the present invention is not limited to a single heat dissipating blade, and a set of heat dissipating blades can be used in a similar manner. Can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view showing a conventional blower.
FIG. 2 is a front view showing a conventional blower.
FIG. 3 is a side view of the blower having a forced heat radiation function according to the first embodiment of the present invention, in which an outer cover is not installed.
FIG. 4 is a side view showing the blower having a forced heat radiation function according to the first embodiment of the present invention;
FIG. 5 is a side view showing a blower having a forced heat radiation function according to a second embodiment of the present invention;
FIG. 6 is a front view showing a blower having a forced heat radiation function according to a second embodiment of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 20 electric motor 21 rotating shaft 30 rear casing 40 supply flow pipe 41 exhaust flow pipe 50 casing cover 51 through hole 60 radiator 61 turntable 62 radiator blade 63 radiator blade 631 bottom 632 standing wall 633 through hole

Claims (6)

An electric motor that receives electric power and rotates, provides rotational power, and has a rotating shaft that protrudes and extends on one side,
A rear casing in which a rotating shaft of the electric motor is provided on a protruding side, an accommodation space is formed inside, and two through holes are provided in a lower position;
An air supply flow pipe and an exhaust flow pipe provided on the side of the electric motor and respectively communicating with the two through holes of the rear casing;
An impeller set provided on the rotating shaft and housed in the housing space of the rear casing and rotated together with the rotating shaft;
A casing cover having a disk shape and provided with a through hole in the middle, covering the rear casing, wherein the rotating shaft penetrates the through hole, and the impeller set includes the rear casing and the casing. A casing cover adapted to be covered within the cover,
A heat radiating device that is provided outside the casing cover and is driven by the rotating shaft to generate an airflow that flows rapidly around the rear casing and the casing cover. Blower. 2. The blower having a forced heat dissipation function according to claim 1, wherein the heat dissipation device has heat dissipation blades, and the heat dissipation blades are provided on the rotation shaft and rotate together with the rotation shaft. The blower having a forced heat dissipation function according to claim 2, wherein the heat dissipation device has an outer cover, and the outer cover covers the outside of the heat dissipation blade. The outer cover has a disc-shaped bottom, an annular upright wall is provided along the periphery thereof, and a large number of through holes are provided at the bottom of the outer cover, thereby ventilating. The blower having a forced heat radiation function according to claim 3. 5. The forced heat radiation according to claim 4, wherein a size of the outer cover is larger than the rear casing and the casing cover, and a gap is formed between the annular upright wall and the casing cover after being covered with the outer cover. Blower with functions. 3. The blower having a forced heat radiation function according to claim 2, wherein said heat radiator has a rotating disk, is provided on said rotating shaft, and said heat radiating blade is fixed on said rotating disk.

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